28205121021

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{69257}}^1$

素因数の和:69362

約数の個数: 64

約数和(自身を含む): 49147693056

約数和(自身を除く): 20942572035

約数列:

[1, 3, 7, 11, 21, 33, 41, 43, 77, 123, 129, 231, 287, 301, 451, 473, 861, 903, 1353, 1419, 1763, 3157, 3311, 5289, 9471, 9933, 12341, 19393, 37023, 58179, 69257, 135751, 207771, 407253, 484799, 761827, 1454397, 2285481, 2839537, 2978051, 5332789, 8518611, 8934153, 15998367, 19876759, 20846357, 31234907, 32758561, 59630277, 62539071, 93704721, 98275683, 122100091, 218644349, 229309927, 366300273, 655933047, 687929781, 854700637, 1343101001, 2564101911, 4029303003, 9401707007, 28205121021]

約数ペア:

[(1, 28205121021), (3, 9401707007), (7, 4029303003), (11, 2564101911), (21, 1343101001), (33, 854700637), (41, 687929781), (43, 655933047), (77, 366300273), (123, 229309927), (129, 218644349), (231, 122100091), (287, 98275683), (301, 93704721), (451, 62539071), (473, 59630277), (861, 32758561), (903, 31234907), (1353, 20846357), (1419, 19876759), (1763, 15998367), (3157, 8934153), (3311, 8518611), (5289, 5332789), (9471, 2978051), (9933, 2839537), (12341, 2285481), (19393, 1454397), (37023, 761827), (58179, 484799), (69257, 407253), (135751, 207771)]